摘要
光催化型超疏水自清洁涂层是在超疏水涂层的基础上通过物理、化学方法复合光催化材料获得光催化性能,使涂层可以在光照作用下将有机附着物进行分解并通过超疏水表面达到自清洁的效果。本文对国内外光催化型超疏水自清洁涂层的构建方式进行总结,将其归纳为表面构造法、共混法、包覆法3类,构造方法的不同对涂层性能的影响方面也有所区别。与单一功能的超疏水涂层相比光催化型超疏水自清洁涂层更能解决实际应用中所面临的问题。此外,本文对光催化型超疏水自清洁涂层的相关性能进行了横向对比,对影响涂层性能较为关键的耐久性能进行了整体的整理分析,并归纳了目前研究当中的光催化型超疏水自清洁涂层的机械耐磨性、耐腐蚀性、耐冲击性和自愈性能,分析了其耐久性提升机制。最后,对光催化型超疏水自清洁涂层未来的应用前景进行了展望,建议从超疏水-光催化协同作用机制、基底结合强度提升、成本控制和复合涂层自修复等方面对光催化型超疏水自清洁涂层进行研究。
Photocatalytic superhydrophobic self-cleaning coatings are gaining more and more attention due to their wide and practical application prospects and excellent performance.Photocatalytic superhydrophobic self-cleaning coatings are based on superhydrophobic coatings with photocatalytic materials compounded by physical and chemical methods to obtain photocatalytic properties,so that the coatings can decompose organic adhesives under the action of light and achieve self-cleaning effects through the superhydrophobic surface.In recent years,with more and more scholars conducting research on photocatalytic superhydrophobic self-cleaning superhydrophobic coatings,photocatalytic superhydrophobic self-cleaning coatings have received unprecedented development.And after continuous improvement,the preparation technology of photocatalytic superhydrophobic self-cleaning coatings has become increasingly mature.The article summarized the research status of photocatalytic superhydrophobic self-cleaning coatings at home and abroad,and classified them into three types:surface construction method,co-blending method,and coating method according to their construction methods.The photocatalytic superhydrophobic coatings constructed by the surface construction method could remove pollutants efficiently and had good superhydrophobic properties and were easy to prepare,but the surface layer was too weak,which made the mechanical wear resistance of the coating generally poor and cannot maintain efficient photocatalytic and superhydrophobic properties for a long period of time,and only the superhydrophobic surface obtained by laser etching of the substrate surface showed high mechanical wear resistance.Due to the complicated preparation process,it was difficult to prepare large-area photocatalytic superhydrophobic coatings by the surface construction method;the coatings prepared by the co-blending method could be specially enhanced by material modification to improve the overall durability of the coating,which expanded the application scope
作者
张应轩
鲁浈浈
葛倩倩
陈健
张晓青
ZHANG Ying-xuan;LU Zhen-zhen;GE Qian-qian;CHEN Jian;ZHANG Xiao-qing(College of Civil Engineering,Chongqing Jiaotong University,Chongqing 400074,China)
出处
《表面技术》
EI
CAS
CSCD
北大核心
2023年第12期298-314,共17页
Surface Technology
基金
重庆市自然科学基金面上项目(CSTB2022NSCQ-MSX0779,CSTC2019JCYJ-MSXMX0556)
重庆市研究生科研创新项目(CYS22395)。
关键词
超疏水与光催化
复合涂层
结合方式
耐久性
自清洁
superhydrophobic and photocatalytic
composite coating
construction methods
durability
self-cleaning
